DE3522709A1 - GEAR LEVER MECHANISM FOR A VEHICLE TRANSMISSION - Google Patents

Description

HOFFMANN. · EITLE & PARTNER

PATENT AND LAWYERS PATENTANWÄLTE WERNER EITLE, DIPL.-ING. . KLAUS HOFFMANN, DR., DIPL.-ING. · WERNER LEHN, D1PL.-ING.

KLAUS FOCHSLE ₁ DIPL.-ING. · BERND HANSEN, DR., DIPL.-CHEM. · HANS-A. BRAUNS, DR., DIPL.-CHEM. · KLAUS GDRG, DIPL.-ING. KARL KOHLMANN, DIPL.-INQ. · HELGA KOLB, DR., D1PL.-CHEM. ■ BERNHARD VON FISCHERN, DIPL.-ING.

LAWYER ALEXANDER NETTE

42 183 p / hl

Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Kariya-shi, Aichi-ken / Japan

Gear lever mechanism for a vehicle transmission

The invention relates to a gear lever mechanism for a vehicle transmission, for example a motor vehicle, a forklift or other vehicles for industrial use.
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Figs. 1 and 2 show the attachment portion of a gear lever mechanism for the transmission of a vehicle such as a forklift with a forward / reverse gear lever 1 and a speed change gear lever 2, which are mounted so that they via a pivot pin 4 both can be pivoted in the forward and backward directions on a transmission housing cover 3. The end sections the gear levers 1 and 2 are each connected to a fork 8 and 9, which is connected to the forward / reverse fork axis 6 and the speed change fork axis 7 cooperate, which are arranged to be displaceable are to be movable in the gear housing 5 forwards and backwards.

20th

POST BOX 8104 2O ARABELLASTRASSE 4 / VIII 8O0O MUNICH 81 TELEPHONE: CO893 911086-89 TELEX: SS9619 CFATHE} TELEFAX: 089 / 9183S6 CSR II + HO TELETEX: 89 7241 CPATH EJ

A high speed and low speed change mechanism 11 and a forward / backward selection mechanism 12 are attached to a countershaft 10 extending from the gearbox 5 both in the forward direction as well as being supported to the rear. A high speed gear 12a and a low speed gear 11b are rotatably attached to the counter shaft 11, and although opposite to each other in the high and low speed change mechanisms 11. The sliding fork 9

IQ is connected to an engagement hub 11c, which are positioned between the high-speed gear 11a and the low-speed gear 11b, whereby the rotation of the gears 11a and 11b can be selectively transmitted to the counter shaft 10, which is achieved by the operation of the

I ^ speed change gear lever 2 takes place.

Furthermore, there are a forward gear 12a and a reverse gear 12b rotatably arranged on the counter shaft 10, namely in the forward / backward voting mechanism

"J, mus 12 in opposite order to each other, where the sliding fork 8 is connected to an engaging hub 12c, which extends between the forward gear 12a and the reverse gear 12b is, whereby the rotation of the countershaft 10 is selectively on the forward gear 12a and the reverse gear 12b can be transmitted, what is done by the operation of the forward / reverse lever 1.

Since the two gear levers 1 and 2 are located directly on the gearbox

5 are attached, the vibration that is caused 30th

when the gear housing 5 swings sideways due to the rolling motion of the motor, directly onto the gear levers 1 and 2 transmitted, so that it is difficult to operate the gear levers 1 and 2.

-δ-Ι It is therefore the object of the invention that to reduce the aforementioned rolling vibrations of the transmission housing, which are transmitted to the gear lever.

The present invention is characterized in particular by the features as set out in the patent claims are.

This solution according to the invention eliminates the aforementioned Difficulties in providing an improved gear lever mechanism for a vehicle transmission. In particular the gear lever mechanism according to the invention reduces the rolling vibrations of the transmission housing, which on the gear lever be transmitted.

Further details, features and advantages of the invention emerge from the following description of the FIGS Drawings purely schematically illustrated embodiments. It shows:

1 is an enlarged sectional view of part of a

conventional construction,

Fig. 2 is an enlarged front sectional view of part of the conventional structure;

3 shows a side view of an industrial vehicle with a gear lever mechanism of the invention,

FIG. 4 is an enlarged cross-sectional view of a gear lever mechanism the invention,

Fig. 5 is an explanatory line drawing for the operational sequence of the mechanism according to the invention;

3522703

6 is an enlarged cross-sectional view of part of another embodiment of the invention; and

7 shows a plan view of a further embodiment the invention.

Fig. 3 shows a forklift truck with a gear lever mechanism of the invention. The forklift includes a body frame 13, in which a differential housing 14, a gear housing 5, a clutch housing 15 and a motor 16 are housed, integrally connected to a front portion of the forklift.

Fig. 4 shows the detailed construction of the forward / reverse gear lever 1 (hereinafter simply as Gear lever) for the gearbox housing 5.

The reference numeral 6 denotes a forward / backward fork axis (hereinafter simply referred to as a fork axis),

2Q which is slidable both in the forward direction as well is housed to the rear in the gear housing cover 3 and in the gear housing 5, this fork axis 6 in the Clutch housing 15 runs after it is the gearbox 5 has passed. A sliding fork 8 is on the

oc fork axle 6 attached. The reference number 17 denotes a bearing part which is mounted on the gear housing 5. The middle section is on this bearing part an arm 18 attached, the lower portion of which is connected to the end portion of the fork axle 6, wherein the _ Arm both forward and backward is rotatably mounted at the rear.

A high speed and low speed change mechanism 11 and a forward / reverse selection mechanism 12 are slidably mounted on a countershaft 10, which is located on both the front and on the rear side of the gearbox housing. A high-

speed gear 11a and a low speed gear 11b of the high-speed and low-speed change mechanism 11 are rotatably mounted opposite each other on the counter shaft 10. A sliding fork 9 is connected to an engaging hub 11c and is located between the high-speed gear 11a and the low-speed gear 11b, whereby the rotation of the gears 11a and 11b is optional can be transmitted to the countershaft 10 by operating the speed change gear lever 2.

Furthermore, there are a forward gear 12a and a Rückic reverse gear 12b of the forward / reverse select mechanism 12 rotatably arranged on the counter shaft 10, namely opposite to each other, the sliding fork 8 with an engagement hub 12c is connected, which is between the forward gear wheel 12a and the reverse gear wheel 12b, causing the rotation of the countershaft 10 can be optionally transferred to the gears 12a and 12b can, which is done by actuating the gear lever 1.

Furthermore, an upper end portion of the arm 18 is over "j. a ball joint 20b is connected to a rear end of a connecting rod 20 which slidably extends through a hole section 19 which is formed in the gear housing 5. The connecting rod 20 is still located in the coupling housing 15, a front end portion of the connecting rod 20 having a lower end

portion of the gear lever 1 is connected, which is done by a ball connection 20a. The lower portion of the gear lever is attached to the body frame 13 and tiltable both forwards and backwards about a tilt axis 21.
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- ΟΙ The mounting position is as shown in Fig. 3 of the gear lever 1 in the driver's cab 22 from the mounting position of the conventional gear lever 1 to the front postponed. The conventional location is shown in dash-dotted lines. Hence the top section of the Gear lever 1 curved backwards so that a handle button 23 of the gear lever 1 on the not shown driver is directed to.

Reference will now be made to the operation of the aforesaid construction with reference to the gear lever mechanism of the vehicle transmission:

When the transmission housing 5 and the clutch housing 15 in the vehicle by the rolling vibration of the engine 16 laterally are vibrated, a point (referred to herein as point P) connecting the connecting rod 20 and the arm 18 also vibrates in the lateral direction of the vehicle, as can be seen from FIG. On the other hand, a point (hereinafter referred to as point Q) vibrates , which connects the connecting rod 20 to the gear lever 1, forwards and backwards, resulting in has that the gear lever 1, which is supported on the body frame 13, only in the forward and backward directions is pivoted.

In the above-mentioned state, "A" is set as the length of the connecting rod 20, "B" as the lateral Vibration range of the vehicle, "X" as vibration rangeQ te both in the forward and backward direction of point Q. The ratios of the values "A", "B" and "X" according to the representation in Fig. 5 result from the following formula:

X = A-VA-B

35227Q3

In this state shown in Fig. 5, however, is the Length "A" of the connecting rod 20 greater than the oscillation width "B" in the lateral direction of the vehicle Point "P", which makes the oscillation "X" in both the anterior and posterior directions of point Q remarkable becomes smaller, so that this is negligible during an actual shifting process by the driver will. Therefore, the influence of the rolling vibration of the engine 16 is not transmitted to the gear lever 1.

Furthermore, when the gear lever 1 is tilted forwards and backwards, the lower end of the gear lever 1 is thereby moved forward and backward. This movement is via the articulation mechanism of the connecting rod 20 and the Transfer arm 18 to fork axle 6. The sliding fork 8 is then moved back and forth so that the shifting operation can be easily performed.

Fig. 6 shows another embodiment of the invention, in which a clutch housing cover 24 on the transmission housing 15 is attached. An upper end portion of the arm 18 extends through a through hole 25 in the aforesaid Lid 24 and can be operated on the outside of the housing 15. The tilt axis 26 is either on the right or left side wall of the clutch housing 15 attached. Furthermore, although this is in the drawings not shown, the arm 18 may be supported in a horizontal or inclined state. The upper The end portion of the arm 18 can protrude through a side wall of the QQ coupling housing 15 in order to connect to the connecting rod 20 to be connected.

In the foregoing embodiments, the invention has been completed with reference to the forward / reverse gear ratio described at 1. However, the operational sequence of the

3522709 -ιοί speed change lever (in the drawings not shown) not described because it is essentially the same construction, a second gear lever for changing the speed, a second fork axle, a second connecting rod and a second arm which function in the same way.

In the embodiments of the invention described above run the end sections of the fork axles through the coupling housing 15. This means that a fastening position of the fork axis 6 in the transmission housing 5 within the outer circumference of the coupling housing 15 is arranged. However, as shown in FIG. 7, the end portion of the fork axis 6 runs for the forward / reverse gear and the fork axle 7 for the speed change outside the clutch housing 15 and are on the outside of the clutch housing 15 connected to the arm 18.

In the aforementioned embodiment of the invention, the gear lever mechanism for the vehicle transmission takes place Application to a vehicle used in industry, such as a forklift truck. Same process and the same merit, however, goes to the use of this gear lever mechanism for transmissions in motor vehicles and trucks and the like. Is installed.

According to the gear lever mechanism according to the invention oQ the rolling vibrations of the engine are barely affecting the gear lever transmitted, so that accordingly the sliding operation becomes easier than that of a conventional gear lever mechanism. You are also able to get into and out of the driver's seat more easily,

because the mounting position of the gear lever in relation if

can be attached more to the front of the driver's seat.

The embodiment of the invention can also be applied to vehicles having an automatic transmission use without pedal clutch.

Claims (6)

HOFFMANN-EITLEOiPARTiS-1FR 3522709 PATENT-UND.ReCHTSmNWKLTE PATENTANWÄLTE WERNER EITLE, DIPL.-ING. · KLAUS HOFFMANN, DR., DIPL.-ING. · WERNER LEHN, DIPL.-ING. KLAUS FDCHSLE, DIPL.-ING. · BERND HANSEN, DR., DIPL1-CHEM. · HANS-A. BRAUNS, DR., DIPL.-CHEM. . KLAUS GORG1 DIPL.-ING. KARL KOHLMANN. DIPL.-ING. . HELGA KOLB, DR., DIPL.-CHEM. · BERNHARD VON FISCHERN, DIPL.-ING. LAWYER ALEXANDER NETTE 42 183 p / hl Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya-shi, Aichi-ken / Japan Gear lever mechanism for a vehicle transmission Patent claims 1. Gear lever mechanism for a transmission of a vehicle, in which a drive mechanism, a differential case, a gear case and a motor are provided, which are each connected to the vehicle, characterized in that a first Fork axle (6) movably protruding from a wall of the gear housing (5) that a first connecting rod (20) is connected to the first fork axle (6) and that a first gear lever (1) with the other end the first connecting rod (20) is connected, whereby the first gear lever (1) via the first connecting rod (20) is connected to the first fork axis (6). 2. Mechanism according to claim 1, characterized in that that a first arm (18) is also provided, which is movable on the outer section of the gear housing (5) is arranged, whereby the first fork axis (6) and the first connecting rod (20) over the first arm (18) are movably connected to one another. POST BOX 8104 SO. ARABELLASTRASSE 4 / VIII 8000 MUNICH 81 TELEPHONE: CO893 911086-83 TELEX: 539619 CPATHEJ TELEFAX: 089/918306 CSR II + 110 TELETEX: 897241 CPATHED 3. Mechanism according to claim 1 or 2, characterized in that a speed change mechanism is provided in the gear housing (5), and that the first sliding shaft (6) and the speed change mechanism (11) are connected to one another via a first sliding fork (9). 4. Mechanism according to one of claims 1 to 3, characterized in that a forward / reverse selection mechanism (12) is arranged in the gear housing (5) that a second fork axis can be moved out of an end section of the gear housing (5) protrudes and is connected to the forward / reverse selection mechanism that a second connecting rod is connected to the second fork axle that a second gear lever is connected to one end portion of the second connecting rod that a second sliding fork attached to the second fork axle and with the forward / reverse selection mechanism is connected and that a second arm is movably connected to the gear housing (5), whereby the second fork axis and the second connecting rod are movably connected to one another via the second arm. 5. Mechanism according to claim 1, characterized in that the length of the connecting rod (20) is greater than that Oscillation width in the lateral direction of the vehicle. 6. Mechanism according to claim 1, characterized in that an end portion of the connecting rod through the gear housing runs and protrudes from this.